main.rs

struct Client {
    option: Option<String>,
}

fn main() {
    let mut client = Client {
        option: Some("address".into_string())
    };
    let address = match client.option {
        Some(v) => {
            client.option = None;
            v
        },
        None => return
    };
    println!("Cloning")
    address.clone();
}

output.md

Should rust be letting me do this?

$ cargo run
   Compiling test-irc v0.0.1 (file:///home/daboross/Projects/Rust/Learn/test-irc)
     Running `target/test-irc`
Cloning
An unknown error occurred

To learn more, run the command again with --verbose.